Dental clamp attachment



Dec, 30, 1924.

J. W. IVORY DENTAL CLAMP ATTACHMENT Filed Aug, 18, 1923 2 Sheets-Sheet 1w 0 INVENiQR:

Dec. 30, 1924. 1,520,753

J. W. IVORY v DENTAL CLAMP ATTACHMENT Filed Aug. 18, 1923 2 Sheets-Sheet2 INVENTdR:

Patented Dec. 39, 1924.

UNITED STATES JAMES W. IVORY, 0F PHILADELPHIA, EENNSYLVANIA.

DENTAL CLAMP A'JTTI ICHMENT.

Application filed August 18, 1923.

To all whom. it may (.(HZCGPILJ Be itknown that I, James W. Ivonx, acitizen of the United States, residing in the city and county ofPhiladelphia, State of Pennsylvania, have invented a new and usefulDental Clamp Attachment, of which the following is a specification.

My invention relates to a dental clamp attachment, and consists ofauxiliary jaws forming resilient braces or supports of less power thanthe bow of the clamp attached to the jaws of the clamp withoutpreventing the regular jaws of a clamp from emb acing a tooth andserving to equalize the pressure of the jaws of the clamp on a tooth andimpart a stiffer and firmer grip of the clamp to' the tooth whereby theclamp may remain where it is placed on the tooth with out; change ofposition.

It consists also in providing the attachment with means for controllinga rubber dam from slipping around the anterior part of the clamp in theadjustment of the latter to the tooth.

The invention is satisfactorily illustrated in the accompanying drawing,but the important instrumentalities thereof may be varied, and so it isto be understood that the invention is not limited to the specificdetails shown and described, as long as they are within the scope of theclaims.

Figure 1 represents a perspective view of a. dental clamp embodying myinvention.

Figures 2 to 19 inclusive represent perspective views of variousmodified embodiments of the invention.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring to the drawings.

1 designates the jaws of a dental clamp to which my inventionappertains, and 2 designates the connecting bow thereof which bow andthe jaw proper of the clamp, exceptin the features of my inventionapplied thereto are well known in the art.

3 designates auxiliary jaws which extend over the jaws 1 and face eachother and have their inner edges 4 in a measure curved to conform to theusual curved edges of the jaws 1.

The auxiliary jaws 3 are resilient in their nature and are adapted toengage a tooth in addition to the engagement by the latter of the jawproper of the clamp, thus providing spring braces or supports on theSerial No. 658,018.

clamp of less power than the bow of the clamp and equalizing thepressure of the jaws on the tooth and providing at the same time stifferand firmer grip of the clamp on the tooth whereby the clamp may remainon the tooth in the position to which it has been adjusted withoutliability to change the same.

The auxiliary jaws 3 are constructed of pieces of suitable metal bentinto shape of the same variously formed and some n'iade separate fromthe jaws 1 and secured thereto, others being integral with the bodies ofthe auxiliary jaws 3.

In Figure 1, the auxiliary jaws 3 are secured to the bodies of the jawsby the clips 5 and secured thereto by the rivets 6.

In Figure 2, the auxiliary jaws 3 are integral with the bodies of thejaws 1 and turned up therefrom and further secured thereto by the rivets7.

In Figure 3, the auxiliary jaws 3 are somewhat differently shaped fromthose in Figure 2, but are separate therefrom and se'- cured thereto bythe rivets 8.

In lligure 4:, the auxiliary jaws 3 are provided with lips 9 whichembrace the edges of the adjacent portions of the bodies of the jaws 1and are secured thereto by the rivets 10.

In Figure 5, the auxiliary jaws 3 are secured to the jaws 1 by the clips3*. In Figure 6, the auxiliary jaws 3 are widened and secured to thejaws 3 by the rivets 1.

In Figure 7, the auxiliary jaws 3 are secured to the jaws 1 close to thebase of the how 2 and are secured to said jaws 1 by the screws 12,although rivets may be substituted therefor.

In Figure 8 the auxiliary jaws 3 are secured to the jaws 1 by the rivets13.

In Figure 9, the auxiliary jaws 3 are duplicated on each jaw 1 forming aplurality thereof for each of the latter, the jaws 3 being secured tothe aws 1 by the screws 14 or in lieu thereof suitable rivets.

In each of Figures 10 and 11 only one auxiliary jaw 1 is provided with ajaw 3, the same being secured thereto by the rivets or screws 15.

In Figure 12, the bow is of double arched form, the crowns of eachhaving thereon jaws 1, and one of them has thereon an auxiliary jaw 3.,

In Figure 13, the auxiliary jaws 3 are secured to the jaws 1 by thescrews or rivets 16 and are longitudinally bifurcated as at 17 toincrease the resiliency thereof.

In Figure 14, the auxiliary jaws 3 are separate from the jaws and formedwith clips 18 which embrace said jaws adjacent to the bow 2 and aresecured thereto by the screws or rivets 19.

In the construction shown in said Figure 14, the jaws 1 are adapted asat 20 for connection of the rolls 21 therewith.

In Figure 15, the auxiliary jaws 3 are separate from the jaws 1 and aresecured thereto by the screws or rivets 22 and are adapted as at 23 forengagement with a bent roll or folded napkin 24, shown in dotted lines.

In Figure 16, the auxiliary jaws 2-3 are located adjacent to the how 2and secured to the jaws 1 by the screws or rivets.

In Figure 17 the auxiliary jaws 1 have extensions forming the arms 25.

In Figure 18, the auxiliary jaws 1 have extensions forming the arms 26.In Figure 19, the auxiliary jaws 3 are secured to the jaws 1 by therivets 27, and they present broad curved surfaces 28 to a tooth, but areresilient in their nature as in the previous figures.

In some of the figures, I show means for controlling a rubber dam fromslipping around the anterior part of the clamp in the adjustment of thelatter to a tooth. There may be lips 29 on the jaws 3, Figure 2, lips 80on the jaws 1 and 3 as Figure. 3, portions 31 of the jaws 3, Figure 1,lips 32 of the jaws 3, Figure 5, lips 38 of the 1, Figure 6, lips 34 onthe jaws 8, Figure 7,

lips 35 on the jaws 3, Figure 8, lips 36 and 37 on the jaws 3 Figure 9,on the jaws 3 Figures 10 and 11, lips 40 on the jaws 3 Figure 13, lips23 on the jaws 1 Figure 15, lips 11 on the jaws 1, Figure 16, lips 12 onthe arms 25 of the jaws 1, Figure 17, lips 43 on the arms 26 of the jaws1, Figure 18, or lips 44 on the jaws 1, Figure 19.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent, is

1. A dental clamp comprising a pair 01 jaws each provided with asubstantially broad supporting surface, a bow secured to and connectingsaid supporting portions and an auxiliary jaw separate from and securedupon said supporting surface said auxiliary jaw comprising a springdikesupport of less power than said bow, whereby the pressure of said jawson "the tooth is equalized and a stiller and firmer grip of the clamp onthe tooth is provided.

2. A dental clamp comprising a pair of jaws each jaw having asubstantially broad supporting surface, a bow secured to and connectingsaid jaws, an auxiliary jaw separate from and secured upon each of thefirst mentioned jaws in opposed relation the said auxiliary awscomprising resilient. spring-like members of less power than said bowwhereby the pressure of said aws upon a tooth is equalized and a firmergrip of the clamp .secured upon a tooth, and means upon said clamp forconnectlng therewith a ber dam, roll, napkin or the like.

JAMES W. IVORY.

Witnesses:

JOHN A. lVmDERsHmM, N. BUSSINGER.'

rub-'

